Z10 not ringing and going directly to voicemail randomly

Anyone by chance having an issue with the Z10 receiving calls but it not ringing and going to voicemail?

Actually have had this issue across multiple Z10 (now on 3rd).

Thought it was just me till an AT&T tech was calling me on my cell phone to see if things were working correctly and the phone flashed the screen for an incoming call but no ring and then went direct to voicemail before I could answer it. The tech said on her end the call rang about 5 times and then went to voicemail. She said I had a bad sim card and to go to the AT&T store to replace which I did about 2 weeks ago.

This morning got a call and they said ignore their 2 voicemails. Phone never rang, no missed calls in log but there and behold 2 voicemails.

So the issue is random. Appears call comes in but phone does not ring. Call eventually goes to voicemail as it should. Nothing appears in the call log.

Everything is working find. OS10 is currently, BBlink is working fine and syncing Outlook as it should, calls coming in and going out with no issues (except this random issue).

Re: Z10 not ringing and going directly to voicemail randomly

If you're having the same problem across multiple phones it's likely something you are "bringing" to the phone. You've tried a new SIM, but what about the SD card? Have you tried a different one. Also, I assume your call settings are not set to block all incoming calls?

Also, apparently. some phones come with all notifications set to "silent".